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Table 3 Incidence rate, crude and adjusted hazard ratios for tinnitus among the sampled patients stratified by surgical intervention

From: Increased risk of tinnitus following a trigeminal neuralgia diagnosis: a one-year follow-up study

Tinnitus occurrence over 1-year follow-up Patients with trigeminal neuralgia who underwent surgical interventions (n = 19) Patients with trigeminal neuralgia who did not undergo surgical interventions (n = 12,568) Comparison groups (n = 12,587)
No. % No. % No. %
Yes 6 31.6 2606 20.7 1556 12.4
Incidence per 100 person-years (95%CI) 38.5 (15.6 ~ 80.1) 23.6 (22.7 ~ 24.5) 13.2 (12.5 ~ 13.8)
Crude HR (95% CI) 2.91 (1.31, 6.49)** 1.78 (1.67, 1.9)*** 1.00
Adjusted a HR (95% CI) 2.20 (0.98, 4.91) 1.68 (1.58, 1.8)*** 1.00
  1. Notes: ** indicates p < 0.01; *** indicates p < 0.001; HZ hazard ratio
  2. aAdjustment for patient’s sex, age, urbanization level, monthly income and geographic region, and hypertension, hyperlipidemia, coronary heart disease, diabetes, cervical spondylosis, temporomandibular joint disorders and injury to head and neck